Carline.



H. H. VAUGHAN 6I R. W. BURNETT.

CARLINE.

APPLICATION FILED IAILII, I9I4.

l l ?3,1 33 Patented Feb. 22, 1916.

HNRY'HVAUGHAN, OF WESTIVIOUNT, AND RICHARD WEBB BURNETT, OF MONTREAL,

.aan c.

QUEBEC, CANADA..

CARMINE.

'Specification or' Letters Patent.

Patented FebQQZ, i916.

.application field January '17, wie. Serial No. 812,731.

To all whom it may concern:

Be it known that we, Hanni?. H. Vanennn, of vthe city orn Westmount, Province of Quebec, Dominion of Canada, and Rcrinno WEBB Erinnern of thecity of Montreah'in the Province of Quebec, Dominion of Cann ada, both citizens of the United States ci America, have invented lcertainl new and useful Improvements in Carlines; and we do hereby declar that the following is a full, lClear, and eXact description thereof.

This invention relates more particularly to carlines of the type built up of angle-irons and the like, and has for its object to produce a carline orother arched structural4 member from mutually reinforcing angleiron, and adapted to accommodate, the root purlins.

Af further object is to produce/a oarline of minimum weight for required strength.

The invention may be said briefly to eonsist of a carline of channel cross-section com; posed of mutually reinforcing angle-irons tapered to their ends and depressed between their middle and ends to 'accommodate the purlins and present an arched edect. A

F or 'full comprehension, however, ci our invention reference must be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate the same parts, and

wherein:

Figure l is a transverse sectional View of a roof and illustrating our improved carline in side elevation; Figs. 2 and 3 are transverse vertical sectional views of the carline taken on line A A. 'and BY B Fig. l drawn-to a larger scale; Fig. 4 is-a plan view of the improved carline partly in section.

ln the constructionA of our improved carline a pair of angle-irons b and c have their vertical flanges tapered near their ends as at Z2 and c and overlapped throng' out their "full length. rlhe angle-irns alfe rst bent to present arched forinationand\the\upper angle-iron is depressed from the middle to its ends as at d, and the end portions thereof coincide with the upper edge of the tapered end of the lower angle-iron while the arched formation of the upper member. is greater than the lower in order to increase the width or depth of the carline at the middle for the purpose of increasing the concavity of the.

depressions. These depressions afford accommodation for the purlins in order that the roof will have the required drainage effect. The angle-irons thus formed are riveted or otherwlse rigidly secured together With their upper and lower flanges extending on the same side of the carline to presentehanfY n el cross-section and the tapered /e'nd portions of the lower edge of tlv/e .vertical flange of the upper member resting in tight contact with the horizontal flange, of the and the upper tapered edge,

lower member,

of the vertical flange of the lower member' in juxtaposition with the upper edge of the ver-` tical ilange of the upper member. This construction secures a mutual reinforcement 'of the carlinemembers owing to the fact that' they are rigidly united in overlapping rela# tion throughout their length, and lowing to.

the bearing of the vertical flanges of the.

upperangleiron on the horizontal flanges of the lower angle-iron near their ends the load exerted on the upper angle-,iron is transmitted directly to the lower member, the eiect being that provision is"made' for accommodating the purlins and: the con@ struction of a properly drained roof.

`What we claim is as follows l. A carline of channel crosssection consisting of Aa pair of overlapping rigidly connected angle-iron members both arched,

the upper to-a greater extent than the lower,

the end portions of the free edges of the,-

nected angle-iron membersboth arched, the

upper to av greater extent than the lower, the upper member being depressed between Vits middle and ends, the end portions ofv j the free edges of the vertical fianges-of the names to this specification in the presence said members being tapered, and the said of two Witnesses.

members being disposed with the edge of HENRY H. VAUGHAN.

the vertical flange of one member in beztr- RICHARD WEBB BURNETT. 5 ing relation with the horizontal flange of Witnesses:

the other member. WILLIAM J. C, HEwnTsoN,

In testimony whereof We have signedz our E. R. PITTS. 

